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Finding the Fourth Proportional to 253,043.16, 349,217.64 and 139,863.48

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Solution

The fourth proportional to 253,043.16, 349,217.64 and 139,863.48 is: 193,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,043.16 : 349,217.64 = 139,863.48 : x
  2. Step 2: Convert to fraction form
    253,043.16/349,217.64 = 139,863.48/x
  3. Step 3: Cross multiply
    253,043.16x = 349,217.64 × 139,863.48
  4. Step 4: Simplify right side
    253,043.16x = 48,842,794,407.79
  5. Step 5: Solve for x
    x = 48,842,794,407.79/253,043.16
  6. Step 6: Final answer
    x = 193,021.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.